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Select DISTINCT individual columns in django?
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The method described below is now available in django 1.4 and is nice if you need ProductOrder instance with field aware distinct ;-)
– Jonathan Liuti
Oct 16 '12 at 15:03
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delete map[key] in go?
...ven if the key is already absent from the map.
delete(timeZone, "PDT") // Now on Standard Time
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How to get current foreground activity context in android?
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Knowing that ActivityManager manages Activity, so we can gain information from ActivityManager. We get the current foreground running Activity by
ActivityManager am = (ActivityManager)context.getSystemService(Context.ACTIVITY...
How to create a temporary directory?
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@jbg yes, it seems odd to me now too - it shouldn't be a really big problem. I might have tweaked an old version of this script so that a path to temporary directory was calculated relatively to current directory, resulting in <s>extinction of mank...
How can a Metro app in Windows 8 communicate with a backend desktop app on the same machine?
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I'm porting my existing project to Win8 right now. It consists of windows service and tray application which are talking to each other via NamedPipes WCF. As you may already know Metro doesn't support named pipes. I ended up using TcpBinding for full duplex connection.
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Can you split a stream into two streams?
...e the ArrayLists with the full size of the initial collection (if this is known at all). This prevents resize events even in the worst-case scenario, but can potentially gobble up 2*N*T space (N = initial number of elements, T = number of threads). To trade-off space for speed, you can leave it out ...
How to write a simple database engine [closed]
...ed in learning how a database engine works (i.e. the internals of it). I know most of the basic data structures taught in CS (trees, hash tables, lists, etc.) as well as a pretty good understanding of compiler theory (and have implemented a very simple interpreter) but I don't understand how to go ...
How to fix corrupted git repository?
... to CodeGnome's last option, if only the local repo is corrupted, and you know the url to the remote, you can use this to re-set your .git to match the remote (replacing ${url} with the remote url):
mv -v .git .git_old && # remove old git
git init && ...
Signal handling with multiple threads in Linux
...al is received? Let's say I wrote a custom signal handler for SIGUSR1, and now I'm sending that signal to the process. The root thread will get that signal. Maybe it's in the middle of some function at that moment. What is going to happen?
– user500944
Jul 26 '...
What exactly is nullptr?
We now have C++11 with many new features. An interesting and confusing one (at least for me) is the new nullptr .
14 Answe...